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1 package com.opensymphony.webwork.portlet.util;
2
3 import org.apache.log4j.Category;
4
5 import java.io.*;
6 import java.util.zip.ZipEntry  ;
7
8 public abstract class AbstractUnzipper implements Unzipper {
9
10 protected static Category log;
11
12 private static final int BUFFER_SIZE = 10240;
13
14 protected File destDir;
15
16 static {
17 log = Category.getInstance(com.opensymphony.webwork.portlet.util.FileUnzipper.class);
18 }
19
20 public abstract File unzipFileInArchive(String s) throws Exception ;
21
22 public abstract void unzip() throws Exception ;
23
24 public AbstractUnzipper() {
25 }
26
27 protected File saveEntry(InputStream is, ZipEntry entry) throws Exception {
28 File file = new File(destDir, entry.getName());
29 if (entry.isDirectory()) {
30 file.mkdirs();
31 } else {
32 File dir = new File(file.getParent());
33 dir.mkdirs();
34 FileOutputStream fos = new FileOutputStream(file);
35 pump(is, fos);
36 fos.flush();
37 fos.close();
38 }
39 return file;
40 }
41
42 private static void pump(InputStream is, OutputStream os) throws IOException {
43 byte buffer[] = new byte[10240];
44 int lengthRead;
45 while ((lengthRead = is.read(buffer)) >= 0) os.write(buffer, 0, lengthRead);
46 }
47
48 }
49
50 |
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